Attachment-plug.



D. E. BOWN'.

ATTACHMENT PLUG.

APPLICATION FILED APR. 6, 1911.

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Patented Aug. 29,1911.

i To all whom it may concern:

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navrn n. JBOWN, or unmarried, rnNNsYLvhNIA.

ATTACHMENT-PLUG.

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Specification of Letters Patent Patented Aug; 29, 1911.

Application filed April 6, 1911. Serial No. 619,279.

Be it known that I, DAVID E. BowN, a residentof Pittsburg, North Side, in the county of Allegheny and Stateof Pennsyl Vania, have invented a new and useful Improvement in Attachme11t-l?l'ugs; and I do forming the same can be swiveled, will be capable of being manufactured easily and quickly, will contain few parts, which may be easily and rapidly assembled, and can each other when desired.

To these ends my invention consists, generally stated, in the novel arrange1nent,'construction and combination of parts, as hereinafter more specifically set forth and departicularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains to construct and use my improved attachment plug, I

' will describe the same more fully, referring to the accompanying drawing, in which Figural is a longitudinal central section of my improved attachment plug. Fig. 2 is a side elevation of the same with some of the parts in section. Fig. 3 is an inner end View of the cap. Fig. 4 is a like view with the cap or cover removed. Fig. 5 is a side elevation of the screw casing. Fig. 6 is a longitudinal section of the body member removed. a

Like symbols of reference herein indicate like parts in each of the figures of the drawis illustrated in the drawing, A represents my improved attachment plug having.

the terminal carrying or: body port-ion 1, which is formed of noncondu cting material, preferably porcelain, and aroundwhich is the metal screw-cap or casing 2 for fitting within and engaging with the lamp socket.

Connected to the body portion 1 is the closing cap or cover 3, which is part of said body and is formed of any suitable non conducting material, preferably porcelain. Thls cap 3 is provided with the outer or head portion 4 having a shoulder 5 thereon and a contracted portion 6 extending-in- .wardly from said shoulder for fitting within a seat 1 in the outer end of said body portion- Extending centrally of the cap 3 and through the head 4 thereon is the hollow portion or'chamber 7 and centrally of and carried by the body 1 is the interiorly threaded metal sleeve 8, which is provided with a flange 9 at its inner end and extending outwardly around the same for fitting Within a seat 10 in the inner end of said body. A screw 11 passes through a hole 11 centrally of the contracted portion 6 on the cap 3 for engaging with the interior of the sleeve 8 by its threaded end portion 12 and the head 13 of said screw is positioned in the hollow portion 7 of said cap and against the inner wall 7' of the same. A

metal plate 14 fits against the inner end of the body land a binding screw 15 for acting as a terminal for one of the wires passes ,through said plateand seat 16 in said body, so as to engage with the threaded interior "of the sleeve 8 and hold said sleeve within said body, while the head 15 on said screw -1s seated within a dished portion 14.

Fitting against the shoulder 5 on the cap 3 is the collar 16, which is formed of any suit-able non-conducting material, preferably porcelam, and isprovided with the flange portion 17 having the tubular portion 18 extending inwardlyfrom the same for fitting around the screw casing 2, which casing is carried by said cap by having a recessed flange portion 2' at its outer end bent over and around the inner edge of the flange portion on such cap.

At one side of and extending through the body 1 and cap 3 is the passageway 19, which opens through the inner end of said body and into thehollow portion 7 of said cap atits outer end, and the opposite side of said body and cap is recessed, as at 20, which opens into said hollow portion through a hole 21 in said cap and provides for a wall 22 at its inner end. A springcontact piece 23 positioned in the recess 20, formed of metal, has a binding screw 24 for the terminal of the other wire engaging through the same and opposite a hole or opening 2" in the casing 2. The outer end of the contact 23 bears against the inner-face of the by said I Copies of this patent may be obtained for ner end is flanged, ,as at 23, for fitting against the wall 2:2, so asto be engaged by a screw 25 passing through the body 1 and having its head 25 seated within a recess 25 in the inner end face of said bodywherecontact is carried by said body.

assembling and use of my improved attachment plug A, the body 1 carrying the sleeve 8 and contact 23 is placed within the casing 2 carried by the collar 16, and the cap 3 is inserted within such. collar, so that its shoulder 5 rests against the flange 17 on said collar and its contracted portion 6 within the seat 1' in said body, and such body and cap are preferably guidedto place by means of lugs 26 in said seat fitting within seats 26 in the inner face of said contracted portion. The screw 11 is then inserted through the hollow portion 7 in the cap 3, so as to engage with the sleeve 8 in the body 1' and screwed up to allow its head 13 to come against the wall 7 in said portion which will hold the body, cap and collar together In the and ready for the connecting of the usual wires to the plug A, one of which is passed through the hollow portion 7 and passageway 19, and its end is connected around the screw 15 back of the plate 14, while the other wire is passed through said hollow portion and hole 21 in said cap into the recess 20, and it is connected by its end to the screw 24 on the contact piece 23.

hen the parts of my improved attachment plug A are thus assembled together and'it is being screwed to place within a lamp socket by its easing the body 1 and cap 3 can be swiveled on the collar 16 carrying said easing, or at any time thereafter, either when positioned in the socket or separated thcrctrom, which will overcome any twisting of the wires when being placed within such socket. or in its withdrawal therefrom, while at the same time the wires for such plug can be easily and quickly conportion for carrying the terminals Eor nected to their terminals and disconnected therefrom while the parts of the plug are intact, and thereby obviate the necessity of removing parts for the attaching and detaching of such Wires.

Various modifications and changes in the design and construction of my improved attachment plug maybe resorted to, without departing from the spirit of the invention or sacrificing any of its advantages.

\Vhat I claim as my invention and desire to secure by Letters Patent is- 1. An attachment-plug comprising a body portion for carrying the terminals, one of which is connected at the side of said body portion, a .screw-casing swiveled around said body portion, and means for permitting the attaching and detaching of said side terminal wire through the side of said casmg. I

2. An attachment plug comprising a body the wires, one of which is connected at the side of said body, and a screw-casing swiveled around said body portion and havingan opening therein adapted to be positioned in front of said side terminal for the attaching and detaching of its wire.

3. A11 attachment plug comprising a body portion for carrying the terminals for the wires, a spring contact on the side of said body carrying one of said terminals, and a scrmv-easdng swivelcd around said body portion and adapted to engage with said contact, said casing havmg an openlng therein for being positioned in front of said contact terminal to attach and detach its wire.

In testimony whereof, I the said DAVID i i. liown, have hereunto set my hand.

DAVID E. BOiVN.

\Vitnesses I T. B. HUMri-Innts, J. N. Coons.

five cents each, by addressing the Commissioner of Patents;

Washington, D. G. 

